.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: #ffffff;

  .header-timer {
    .timer-normal {
      color: #1890ff;
      font-size: 12px;
      font-weight: 600;
    }

    .timer-warning {
      color: #ff4d4f;
      font-size: 12px;
      font-weight: 600;
      animation: blink 1s infinite;
    }
  }
}

.header.no-back {
  .adm-nav-bar-back-arrow {
    display: none !important;
  }
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0.5; }
}
